Will I notice it break right when it happens? Like if Im driving over the bridge will I just lose engine power and my car go into limp mode? Or will I have time to drive it home or to a safe place to park without damaging the engine.

Not sure about this one. Luck to not have it happen to me yet. As for your second reply about the metal one, I think that would apply to any aftermarket CP, or at least some of the more popular ones. ETS and ER seem to be the two big ones, but some people say the ER doesn't install as easy, costs a little more, the coupling if not tightening really really well can come off, and the fit is a bit stretched. I personally have not tried the ER or the ETS, so I'm just going off the reviews I've read.